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Cisco Warns of New Zero-Day ISE Auth Bypass (CVSS 10.0) Exploited in Active Attacks

Cisco Warns of New Zero-Day ISE Auth Bypass (CVSS 10.0) Exploited in Active Attacks

Ravie LakshmananSep 17, 2026Vulnerability / Web Security Cisco has warned of a fresh maximum-severity security flaw impacting Identity Services Engine (ISE) that has come under active exploitation. The vulnerability, tracked as CVE-2026-76460 (CVSS score: 10.0),… 

U.S. Seizes NightmareStresser Domains Linked to Hundreds of Thousands of DDoS Attacks

U.S. Seizes NightmareStresser Domains Linked to Hundreds of Thousands of DDoS Attacks

Ravie LakshmananSep 17, 2026Cybercrime / DDoS-for-Hire The U.S. Department of Justice (DoJ) on Tuesday announced the court-authorized seizure of internet domains associated with a distributed denial-of-service (DDoS)-for-hire service known as NightmareStresser. The domains in question… 

Attackers Exploit Issabel Framework Flaw Enabling Unauthenticated OS Command Execution

Attackers Exploit Issabel Framework Flaw Enabling Unauthenticated OS Command Execution

Ravie LakshmananSep 16, 2026Vulnerability / Web Security A critical security flaw in Issabel Framework, a web-based framework for the open-source unified communications PBX software, has come under active exploitation. The vulnerability in question is CVE-2026-89026… 

Three Threat Groups Target Russian Enterprises With Backdoors, Ransomware, and Wipers

Three Threat Groups Target Russian Enterprises With Backdoors, Ransomware, and Wipers

Enterprises in Russia have emerged as the target of three threat activity clusters tracked as NightEagle, Hacking Cat, and Toy Ghouls, according to multiple reports from Kaspersky. The cybersecurity vendor said it has identified attacks… 

One Extension Could Hijack AI Assistants Across Chrome, Comet, Edge, Opera Neon and Claude

One Extension Could Hijack AI Assistants Across Chrome, Comet, Edge, Opera Neon and Claude

Security researchers at Forever Security have shown that one ordinary browser extension could take control of the AI assistants built into five Chromium-based products: Gemini Live in Chrome, Perplexity Comet, Microsoft Edge, Opera Neon and the Claude… 

Attacker Hijacks AI Coding Assistant Session, Spreads Shai-Hulud Across About 100 Repositories

Attacker Hijacks AI Coding Assistant Session, Spreads Shai-Hulud Across About 100 Repositories

Swati KhandelwalSep 16, 2026Artificial Intelligence / Software Security Mandiant says an attacker hijacked an active AI coding-assistant session at an unnamed software-as-a-service provider and later spread Shai-Hulud across about 100 internal code repositories. Before the repository spread,… 

Google Patches Pixel Modem Flaw Amid Signs of Limited Targeted Exploitation

Google Patches Pixel Modem Flaw Amid Signs of Limited Targeted Exploitation

Ravie LakshmananSep 16, 2026Vulnerability / Mobile Security Google has disclosed that a high-severity security flaw in its Pixel Cellular Modem has come under exploitation in the wild. The vulnerability, tracked as CVE-2026-58704 (CVSS score: 8.0),…